SELECT statements function OK and very fast. But UPDATE satements take forever to run, even a small query updating one row leaves the web browser loading the page for minutes, before the page is ready. trying to make several update queries takes too long and the website finally gives up. Yet the queries take effect on the database, the update queries do their job OK, which can be checked with SELECt statements.

I have tried oci_execute with and without OCI_NO_AUTO_COMMIT, and with or without actually committing the query to database. Same problem in all cases, also when doing oci_execute with OCI_NO_AUTO_COMMIT and immediately oci_rollback.